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Gardeners' Notes:

Has anyone grown this? Can anyone point out the practical differences between this and A. julibrissin? I've seen a few photos, and to the eye the two species seem identical.

(a bit later)

I found an image from NCSU by Will Cook that shows the two growing next to each other at http://goo.gl/gMIF5
There's a statement on the website (at http://goo.gl/k4k63), along with many fine photos taken in Durham, NC, that the tree grows to 60ft or more, making it twice the size of A. j. Still looks like a fine ornamental, although there appears to be a risk of naturalization.